Integrated liquid-cooled battery cluster device

Abstract

The utility model relates to an integrated liquid-cooled battery cluster device which comprises a battery rack, and the battery rack comprises a base frame, a stand column assembly, a top beam frame and a supporting plate. The base frame and the top beam frame are rectangular frames; the stand column assembly comprises four side stand columns, the four stand columns comprise the two left side stand columns arranged in the first direction at intervals and the two right side stand columns arranged in the first direction at intervals, and the left side stand columns and the right side stand columns directly face each other in the second direction in a one-to-one mode. The battery module comprises a cover plate, a battery pack, an end plate, a fixing belt and a liquid cooling plate; the battery pack is arranged on the liquid cooling plate, the liquid cooling plate is connected with the supporting plate, and the cover plate covers the battery pack; the two end plates are arranged at the two ends of the supporting plate in the length direction respectively, and the fixing band is in an annular band shape and sleeves the peripheries of the two end plates and the battery pack; through the arrangement of the supporting plate, the battery module can be completely supported; due to the arrangement of the supporting plate, the bearing bottom frame originally belonging to the battery module and the battery frame are combined into a whole, so that the installation is faster and more convenient.

Description

Technical Field

[0001] The present disclosure relates to the technical field of energy storage equipment, and in particular to an integrated liquid-cooled battery cluster device. Background Art

[0002] An energy storage power station is composed of many energy storage batteries. The energy storage batteries are composed of single energy storage cells connected in series and parallel to form energy storage battery modules. The energy storage battery modules are installed on energy storage battery racks to form battery clusters, and the battery clusters are connected in parallel to form a battery system.

[0003] Existing battery clusters include welded-in-one and fully removable models. While welded-in-one models offer a stable overall structure, thermal deformation from welding can affect positioning errors, parallelism, and flatness to varying degrees, creating numerous challenges during subsequent assembly. While fully removable models offer advantages such as convenient transportation, flexible use, and interchangeable components, they struggle to guarantee structural strength and long-term stability. Long-term loads and vibrations under operating conditions can lead to loosening of the assembled structure.

[0004] Chinese patent CN116259904A discloses a battery rack and battery cluster. The battery rack includes a frame body and multiple guide support mechanisms. The frame body is a welded rectangular frame. The guide support structure includes two guide rails arranged opposite each other along a first direction. The guide rails are detachably connected to the frame body. The frame body includes a base, which includes a base body and a reinforcement frame arranged on the inner side of the base body. The battery cluster includes a battery rack and multiple battery modules, which are mounted on the guide support mechanisms of the battery rack. The battery rack is partially detachable, wherein the frame body is a welded rectangular frame, and the base is highly stable, ensuring that the overall frame structure of the battery rack meets stability requirements. The guide rails are detachably mounted to the frame body, preventing the guide rails from being affected by thermal deformation caused by welding, ensuring the guide rails' straightness, flatness, and parallelism. The guide rails are also replaceable, which helps reduce maintenance costs.

[0005] Although the above patent reduces maintenance costs by providing a detachable guide rail, it still has the following defects:

[0006] In the above patent, only guide rails are provided on the battery rack, and the guide rails can only provide support on both sides of the bottom of the battery module, and cannot provide stable support for the battery module. Since there are many battery cells inside the battery module, only providing support on both sides of the bottom of the battery module can easily cause uneven force on the bottom plate of the battery module, and then cause the middle part of the battery module to collapse downward under the action of gravity, posing a safety hazard. In order to avoid the above situation, the existing technology will place the battery module on a load-bearing chassis, but this setting will make the installation of the battery module cumbersome. Utility Model Content

[0007] In order to solve the problems existing in the above-mentioned prior art, the purpose of the present disclosure is to provide an integrated liquid-cooled battery cluster device to solve the technical problems that the prior art battery rack cannot provide sufficient support for the battery module, and the battery module has a cumbersome bottom plate installation in order to ensure the support capacity.

[0008] The integrated liquid-cooled battery cluster device disclosed herein comprises a battery rack and a battery module;

[0009] The battery rack includes a base frame, column assemblies, a top beam frame and support plates adapted to the number of layers of the battery modules;

[0010] The base frame is a rectangular frame; the top beam frame is a rectangular frame adapted to the base frame; the column assembly includes four side columns, and the four side columns are distributed at the four corners of the base frame. The four columns include two left columns spaced apart along the first direction and two right columns spaced apart along the first direction, and the left columns and the right columns are opposite to each other in the second direction; the top ends of the four columns are respectively connected to the four corners of the top beam frame; the four corners of the support plate are respectively connected to the four columns;

[0011] The battery module includes a cover plate, a battery pack, an end plate, a fixing belt and a liquid cooling plate;

[0012] The battery pack is arranged on the liquid cooling plate, the liquid cooling plate and the support plate are connected, and the cover plate is arranged on the battery pack; the two end plates are respectively arranged at both ends of the support plate in the length direction and the height is adapted to the battery pack, and the fixing belt is annular and is sleeved on the two end plates and the outer periphery of the battery pack.

[0013] Preferably, the battery rack further comprises a fixing plate, which is arranged along the second direction, with one end detachably connected to one of the left columns and the other end detachably connected to one of the right columns, and the fixing plate is detachably connected to the battery module.

[0014] Preferably, the pillar assembly further comprises at least one left center pillar and at least one right center pillar, and the left center pillar and the right center pillar are directly opposite to each other in the second direction;

[0015] The left center column is arranged between the two left columns, and the two ends of the left center column are respectively connected to the base frame and the top beam frame; the right center column is arranged between the two right columns, and the two ends of the right center column are respectively connected to the base frame and the top beam frame.

[0016] Preferably, the battery module further includes a thermal insulation sheet, the battery pack includes at least two rows of battery cell rows, at least two rows of battery cell rows are arranged along the second direction, and each row of battery cell rows includes a number of battery cells placed sequentially along the first direction; within the battery cell row, the thermal insulation sheet is arranged between two adjacent battery cells.

[0017] Preferably, the battery module further includes thermal insulation cotton and a protective base plate, the thermal insulation cotton is arranged on the protective base plate and connected to the liquid cooling plate, and the protective base plate is arranged between the liquid cooling plate and the support plate and connected to the support plate.

[0018] Preferably, a first reinforcement structure is provided at the bottom of the support plate, and the first reinforcement structure includes a plurality of first reinforcement ribs extending along the second direction.

[0019] Preferably, a surface of the liquid cooling plate close to the battery core is coated with thermal conductive gel.

[0020] Preferably, a second reinforcement structure is provided on the protective bottom plate, and the second reinforcement structure includes at least one second reinforcement rib extending along the first direction.

[0021] The advantages of the integrated liquid-cooled battery cluster device disclosed in the present disclosure are:

[0022] Through the setting of the support plate, the battery module can be fully supported and stable support can be provided for the battery module. The bottom of the battery module is evenly stressed and there will be no collapse in the middle, thus avoiding safety hazards. At the same time, due to the setting of the support plate, the load-bearing base frame originally belonging to the battery module is combined with the battery rack, making installation faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an overall diagram of an integrated liquid-cooled battery cluster device according to the present disclosure;

[0024] Figure 2 is a schematic diagram of the integrated liquid-cooled battery cluster device;

[0025] Figure 3 is a schematic diagram of the battery rack;

[0026] Figure 4 is a schematic diagram of the support plate;

[0027] Figure 5 is an exploded view of the battery module.

[0028] Explanation of the accompanying drawings: 1-battery rack, 11-base frame, 12-column assembly, 121-left column, 122-right column, 123-left center column, 124-right center column, 13-top beam frame, 14-support plate, 141-first reinforcement structure, 15-fixing plate, 2-battery module, 21-cover plate, 22-end plate, 23-fixing belt, 24-liquid cooling plate, 25-battery cell, 26-thermal insulation cotton, 27-protective bottom plate, 271-second reinforcement structure. DETAILED DESCRIPTION

[0029] like Figures 1 to 5 As shown, an integrated liquid-cooled battery cluster device disclosed herein includes a battery rack 1 and a battery module 2;

[0030] The battery rack 1 includes a base frame 11, column assemblies 12, a top beam frame 13 and support plates 14 adapted to the number of layers of battery modules 2;

[0031] The base frame 11 is a rectangular frame; the top beam frame 13 is a rectangular frame adapted to the base frame 11; the column assembly 12 includes four side columns, which are distributed at the four corners of the base frame 11, and the four columns include two left columns 121 spaced apart along the first direction and two right columns 122 spaced apart along the first direction, and the left columns 121 and the right columns 122 are opposite to each other in the second direction; the top ends of the four columns are respectively connected to the four corners of the top beam frame 13; the four corners of the support plate 14 are respectively connected to the four columns;

[0032] The battery module 2 includes a cover plate 21, a battery pack, an end plate 22, a fixing belt 23 and a liquid cooling plate 24;

[0033] The battery pack is arranged on the liquid cooling plate 24, the liquid cooling plate 24 is connected to the support plate 14, and the cover plate 21 is covered on the battery pack; the two end plates 22 are respectively arranged at both ends of the length direction of the support plate 14 and the height is adapted to the battery pack, and the fixing belt 23 is annular and is sleeved on the two end plates 22 and the outer periphery of the battery pack.

[0034] Specifically, the bottom frame is rectangular, and the top frame is the same rectangle as the bottom frame. Preferably, a first reinforcing beam is welded to the middle of the bottom frame, the first reinforcing beam is arranged along the second direction, and both ends are welded to the inner side surface of the bottom frame; a second reinforcing beam is welded to the middle of the top frame, the second reinforcing beam is arranged along the second direction, and both ends are welded to the inner side surface of the top frame.

[0035] The number of support plates 14 is determined according to the height of the battery rack 1 and the number of layers on which the battery modules 2 are to be placed. For example, Figure 1As shown, the height of the battery rack 1 can accommodate four layers of battery modules 2, so the number of support plates 14 is four, and the two ends of the support plates 14 in the second direction are connected to the column assembly 12. The connection method can be welding, conventional bolts and nuts, or riveting, and the corresponding selection is made according to actual needs.

[0036] In the battery module 2 , the liquid inlet and liquid outlet of the liquid cooling plate 24 are preferably arranged on the same side to facilitate the arrangement of the liquid path.

[0037] Three of the sides of the support plate 14 extend upward to form a blocking portion, which is used to prevent the battery module 2 from sliding in the directions corresponding to the three sides, thereby ensuring the stability of the support. By using only three sides to form the blocking portion, the battery module 2 can be pushed in from the side where the blocking portion is not formed, making it convenient for the staff to place the battery module 2 on the support plate 14.

[0038] Due to the arrangement of the support plate 14, when assembling the battery cluster, it is only necessary to place the battery module 2 on the support plate 14, and the support plate 14 plays a supporting role.

[0039] Furthermore, after the battery module 2 is installed on the support plate 14, in order to ensure the stability of the battery module 2, the battery rack 1 also includes a fixing plate 15, which is arranged along the second direction, with one end detachably connected to a left column 121 and the other end detachably connected to a right column 122, and the fixing plate 15 is detachably connected to the battery module 2.

[0040] Further, such as Figures 1 to 3 As shown, since the battery rack 1 is relatively large, in order to ensure the stability of the entire rack, the column assembly 12 further includes at least one left center column 123 and at least one right center column 124, and the left center column 123 and the right center column 124 are directly opposite each other in the second direction;

[0041] The left center column 123 is set between the two left columns 121, and the two ends of the left center column 123 are respectively connected to the base frame 11 and the top beam frame 13. The right center column 124 is set between the two right columns 122, and the two ends of the right center column 124 are respectively connected to the base frame 11 and the top beam frame 13.

[0042] Further, such as Figure 5 As shown, the battery module 2 also includes a heat insulating sheet, and the battery pack includes at least two rows of battery cells, which are arranged along the second direction, and each row of battery cells includes a plurality of battery cells 25 placed in sequence along the first direction; since there are multiple battery cells 25 in the battery module 2, each battery cell 25 will generate heat when working. In order to transfer and accumulate heat between the battery cells 25 when working, a heat insulating sheet is provided between two adjacent battery cells 25 in the battery cell row.

[0043] Furthermore, to further enhance the protection of the battery module 2, the battery module 2 also includes thermal insulation 26 and a protective base plate 27. The thermal insulation 26 is disposed on the protective base plate 27 and connected to the liquid cooling plate 24. The protective base plate 27 is disposed between the liquid cooling plate 24 and the support plate 14 and connected to the support plate 14. The thermal insulation 26 can both isolate the heat generated by the battery cells 25 during operation and, since it is disposed on the protective base plate, provide a buffer for the battery assembly. Furthermore, the provision of the protective base plate 27 improves the safety performance of the battery module 2.

[0044] Further, such as Figure 4 As shown, in order to better support the battery module 2 , a first reinforcement structure 141 is provided at the bottom of the support plate 14 . The first reinforcement structure 141 includes a plurality of first reinforcement ribs extending along the second direction.

[0045] Furthermore, to improve the heat dissipation capacity of the battery module 2, the surface of the liquid cooling plate 24 closest to the battery cell 25 is coated with a thermally conductive gel. Thermally conductive gel is a paste-like gap-filling material made from a silicone resin base with thermally conductive fillers and adhesives added in a specific ratio. It is processed through a special process and has excellent thermal conductivity and good surface affinity. After curing, the thermally conductive gel forms a high-performance elastomer that can be molded to the shape of the structure, providing excellent structural adaptability and surface adhesion properties. The thermally conductive gel has high thermal conductivity, excellent electrical insulation, aging resistance, resistance to alternating hot and cold temperatures, shock absorption, vibration absorption, and stability. It is insensitive to thickness, has good adaptability, and can ensure good contact between the heating and cooling surfaces under low or no pressure conditions. This improves the heat dissipation capacity of the battery module 2.

[0046] Furthermore, in order to improve the safety performance of the battery module 2 , a second reinforcement structure 271 is provided on the protective bottom plate 27 . The second reinforcement structure 271 includes at least one second reinforcement rib extending along the first direction.

[0047] In the description of the present disclosure, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present disclosure.

[0048] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of this disclosure.

Claims

1. An integrated liquid-cooled battery cluster device, characterized in that: include: Battery rack (1) and battery module (2); The battery rack (1) comprises a base frame (11), a column assembly (12), a top beam frame (13), and a support plate (14) adapted to the number of layers of the battery modules (2); The base frame (11) is a rectangular frame; the top beam frame (13) is a rectangular frame adapted to the base frame (11); the column assembly (12) includes four side columns, the four side columns are distributed at the four corners of the base frame (11), the four columns include two left columns (121) spaced apart along a first direction and two right columns (122) spaced apart along the first direction, the left columns (121) and the right columns (122) facing each other in a second direction; the top ends of the four columns are respectively connected to the four corners of the top beam frame (13); the four corners of the support plate (14) are respectively connected to the four columns; The battery module (2) comprises a cover plate (21), a battery pack, an end plate (22), a fixing belt (23) and a liquid cooling plate (24); The battery pack is arranged on the liquid cooling plate (24), the liquid cooling plate (24) and the support plate (14) are connected, and the cover plate (21) is covered on the battery pack; the two end plates (22) are respectively arranged at both ends of the support plate (14) in the length direction and the height is adapted to the battery pack; the fixing belt (23) is in the shape of an annular belt and is sleeved on the two end plates (22) and the outer periphery of the battery pack.

2. The integrated liquid-cooled battery cluster device according to claim 1, characterized in that: The battery rack (1) further comprises a fixing plate (15), which is arranged along the second direction, one end of which is detachably connected to a left-side column (121), and the other end of which is detachably connected to a right-side column (122), and the fixing plate (15) is detachably connected to the battery module (2).

3. The integrated liquid-cooled battery cluster device according to claim 1, characterized in that: The column assembly (12) further includes at least one left center column (123) and at least one right center column (124), wherein the left center column (123) and the right center column (124) are opposite to each other in the second direction; The left middle column (123) is arranged between the two left middle columns (121), and the two ends of the left middle column (123) are respectively connected to the base frame (11) and the top beam frame (13); the right middle column (124) is arranged between the two right middle columns (122), and the two ends of the right middle column (124) are respectively connected to the base frame (11) and the top beam frame (13).

4. The integrated liquid-cooled battery cluster device according to claim 1, characterized in that: The battery module (2) further comprises a heat insulating sheet, the battery pack comprises at least two rows of battery cells, the at least two rows of battery cells being arranged along the second direction, each row of battery cells comprising a plurality of battery cells (25) sequentially arranged along the first direction; and within the battery cell row, the heat insulating sheet is arranged between two adjacent battery cells (25).

5. The integrated liquid-cooled battery cluster device according to claim 1, characterized in that: The battery module (2) further comprises heat-insulating cotton (26) and a protective base plate (27); the heat-insulating cotton (26) is arranged on the protective base plate (27) and is connected to the liquid cooling plate (24); the protective base plate (27) is arranged between the liquid cooling plate (24) and the support plate (14) and is connected to the support plate (14).

6. The integrated liquid-cooled battery cluster device according to claim 1, characterized in that: A first reinforcement structure (141) is provided at the bottom of the support plate (14), and the first reinforcement structure (141) comprises a plurality of first reinforcement ribs extending along the second direction.

7. The integrated liquid-cooled battery cluster device according to claim 1, characterized in that: The surface of the liquid cooling plate (24) close to the battery core (25) is coated with a heat-conducting gel.

8. The integrated liquid-cooled battery cluster device according to claim 5, characterized in that: A second reinforcement structure (271) is provided on the protective bottom plate (27), and the second reinforcement structure (271) comprises at least one second reinforcement rib extending along the first direction.

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